This is an exhaustive resource of up-to-date chart information on every artist and song to hit the Top 40 on Billboard's pop singles charts since 1955. It is fully revised and expanded to include all the Billboard Top 40 hits and chart data up until 2009. This is the 9th edition of one of Billboard Books' backlist bestsellers, fully revised and expanded to encompass all the Billboard Top 40 hits and chart data from the years 1955 to 2009. It is an exhaustive resource of up-to-date chart information and includes not just America's most popular songs in a quick, easy-to-read guide, but also biographical information on the artists, lists of record holders, top artists by decade and much more.